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|
module Component.Input
( In(..)
, Out(..)
, view
, defaultIn
) where
import qualified Data.Map as M
import qualified Data.Maybe as Maybe
import Data.Text (Text)
import qualified Data.Text as T
import Data.Time (NominalDiffTime)
import Data.Validation (Validation (Failure, Success))
import qualified Data.Validation as V
import Reflex.Dom (Dynamic, Event, MonadWidget, Reflex,
(&), (.~))
import qualified Reflex.Dom as R
import qualified Common.Util.Validation as ValidationUtil
import qualified Component.Button as Button
import qualified View.Icon as Icon
data In a = In
{ _in_hasResetButton :: Bool
, _in_label :: Text
, _in_initialValue :: Text
, _in_inputType :: Text
, _in_validation :: Text -> Validation Text a
}
defaultIn :: In Text
defaultIn = In
{ _in_hasResetButton = True
, _in_label = ""
, _in_initialValue = ""
, _in_inputType = "text"
, _in_validation = V.Success
}
data Out t a = Out
{ _out_raw :: Dynamic t Text
, _out_value :: Dynamic t (Validation Text a)
, _out_enter :: Event t ()
}
view
:: forall t m a b. MonadWidget t m
=> In a
-> Event t Text -- reset
-> Event t b -- validate
-> m (Out t a)
view input reset validate = do
rec
let resetValue = R.leftmost
[ reset
, fmap (const "") resetClic
]
inputAttr = R.ffor value (\v ->
if T.null v && _in_inputType input /= "date"
then M.empty
else M.singleton "class" "filled")
value = R._textInput_value textInput
containerAttr = R.ffor inputError (\e ->
M.singleton "class" $ T.intercalate " "
[ "textInput"
, if Maybe.isJust e then "error" else ""
])
let valueWithValidation = R.ffor value (\v -> (v, _in_validation input $ v))
inputError <- getInputError valueWithValidation validate
(textInput, resetClic) <- R.elDynAttr "div" containerAttr $ do
textInput <- R.el "label" $ do
textInput <- R.textInput $ R.def
& R.attributes .~ inputAttr
& R.setValue .~ resetValue
& R.textInputConfig_initialValue .~ (_in_initialValue input)
& R.textInputConfig_inputType .~ (_in_inputType input)
R.divClass "label" $
R.text (_in_label input)
return textInput
resetClic <-
if _in_hasResetButton input
then
Button._out_clic <$> (Button.view $
(Button.defaultIn Icon.cross)
{ Button._in_class = R.constDyn "reset"
, Button._in_tabIndex = Just (-1)
})
else
return R.never
R.divClass "errorMessage" $
R.dynText . fmap (Maybe.fromMaybe "") $ inputError
return (textInput, resetClic)
let enter = fmap (const ()) $ R.ffilter ((==) 13) . R._textInput_keypress $ textInput
return $ Out
{ _out_raw = value
, _out_value = fmap snd valueWithValidation
, _out_enter = enter
}
getInputError
:: forall t m a b c. MonadWidget t m
=> Dynamic t (Text, Validation Text a)
-> Event t c
-> m (Dynamic t (Maybe Text))
getInputError validatedValue validate = do
let errorDynamic = fmap (\(t, v) -> (t, validationError v)) validatedValue
errorEvent = R.updated errorDynamic
delayedError <- R.debounce (1 :: NominalDiffTime) errorEvent
fmap (fmap fst) $ R.foldDyn
(\event (err, hasBeenResetted) ->
case event of
ModifiedEvent t ->
(Nothing, T.null t)
ValidateEvent e ->
(e, False)
DelayEvent e ->
if hasBeenResetted then
(Nothing, False)
else
(e, False)
)
(Nothing, False)
(R.leftmost
[ fmap (\(t, _) -> ModifiedEvent t) errorEvent
, fmap (\(_, e) -> DelayEvent e) delayedError
, R.attachWith (\(_, e) _ -> ValidateEvent e) (R.current errorDynamic) validate
])
validationError :: (Validation Text a) -> Maybe Text
validationError (Failure e) = Just e
validationError _ = Nothing
data InputEvent
= ModifiedEvent Text
| DelayEvent (Maybe Text)
| ValidateEvent (Maybe Text)
|
